Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Sky-Sear Cowl Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Sky-Sear Cowl suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Sky-Sear Cowl is part of the transmog set Sha Skin Regalia (Warlock only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 90409 (90401 to 90414) were usually added in the same batch as Sky-Sear Cowl: the same quest line, zone, vendor or reward set.